Pump-rod coupling



(N6 Model.)

W. L. GUMM. PUMP ROD GOUPLING.

Miren Terres- 'PATENT Ormea.)

' VALLACE L. GUMM, OF VHITE OAKS, TERRITORY OF NEW MEXICO.

PU-Nl P-ROD COUPLING.

SPECIFICATION forming part of Letters Patent IVO. 540,934', dated June11, 1895.

Application led April l1, 1894. Serial No. 507.163. (No model.) v

To all whom t may concern: f .Be it known that T, WALLACE L. GUMM, acitizen ot' the United States, residing at White Oaks, in the county ofLincoln and Territory of New Mexico, have invented certain new anduseful Improvements in Pump-Rod Couplings; rand I do declare thefollowing to be a full, clear, and eXact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, referencebeing had to the accompanying drawings,and to the letters of reference marked thereon, which form a part ofthis specification.

This invention relates to improvements in devices for coupling togetherthe sections of pump rods in a manner to prevent accidentaldisconnection while in use, and in the operation of inserting andremoving` the valves.

In the' majority of wells, especially Wellsof comparatively great deptha barrel is used, the diameter of which is less than that of the pipewhich carries the water to the surface. The lower valve is constructedin such a man ner as that the plunger valve which is directly secured tothe pump rod, may be connected therewith by turning the rod and screwingthe valves together, and the whole withdrawn from the barrel and pipe byraising the rod. This arrangement obviates the necessity of removing thepipe when repairs to either Valveare needed. The rod is made up ofsections secured together and the object of the invention isto preventthese sections from being disconnected or unscrewed from each otherwhile in use, and during the operation of coupling the valves togetherto remove them, or uncoupling the valves after the same are in place.

The invention consists in means for preventing the sections of the rodsfrom turning independently and in the construction of the parts thereofand the relative arrangement and operation of same, all of which willfully and clearly appear from a reading of the fol- ,lowing description,taken in connection with the accompanying drawings, which form a part ofthis specification, and in which- Figure 1 illustrates in perspectiveview my improved coupling applied. Fig. 2 is a longitudinal sectionalview, and Fig. 3 is a crosssection on line of Fig. 2.

Referring to the drawings by letter,.A denotes one section of a pumprod, andB is the adjacent section, the meeting ends of which are maderectangular in cross section and are provided with holes c c. Thecoupling consists ot' two members, the upper one cl consisting ot' arectangular shaped block d having a recess d2 in its upper side toreceive the end of the section A, and having a socket d3 centrallyarranged and screw threaded as shown.- Extending upward from the blockare two straps d4 d4 which in practice confine the lower end of thesection A, and have holes d5 d5 which register with the holes c c, and ec are bolts passed through the registering holes and secured by nuts ee.

The lower member f ot' the coupling consists of a block f in the lowerside of which is a recess f2 to receive the upper end of the section B,and extending upward from the upper end ot' lthe block is a screwthreaded pin f3 which in practice enters and engages the threaded socketd3 in the upper member.

Depending from the block are two straps f4fAAL having holes f5 f5 andwhich with the bolts g g and nuts g g constitute the means forconnection with the section Bin a manner similar to the connectionbetween the upper member and the section A. The block f has secured toone of its sides a stop h for a purpose to be explained.

t' is a sleeve rectangular in cross section, the

inner side conforming in size and shape to the outer side of the blocks.In practice the members are secured respectively to the sections A andB, and the pin entering the socket the -parts are turned until theblocks cometogether. The sleeve which temporarily has been'moved upwardon the upper memberis moved downward over the coupling until the lowerside engages the stop. The members are thus held firmly by the sleeveagainst turning,and consequently the danger of accidental uncoupling isovercome.

In practice all of the sections of the pump rod are connected by myimproved coupling,

in a manner to insure rigidity throughout. When it is desired to removethe valves for repairs, the rod may be turned to connect the valves`without the danger of unscrewing the sections, and as the rod iswithdrawn the sections are disconnected byraising the sleeve IOO andunscrewing the members of the coupling. When the valves are to bereplaced the sections are screwed together and the rod lowered, and thelatter turned in the opposite direction to disconnect the valves.

The coupling is simple in construction, is cheaply made, and may beeasily manipulated.

I claim- A coupling for the sections of pump rods, consisting of twoseparable members, the lower one of which comprises a block square incross section and having in its lower end a rectangular recess for theend of a section of the pump rod, apertured straps integral with saidblock and connected by bolts and nuts to said section, a threaded pinextending from the npperend of the block, and a stop on one side of saidblock; the upper member comprising a block conforming in size and shapeto the lower block and having a threaded recess for connection with thepin, and a recess in its upper end for another section of the pump rod,straps integral with said block and having nut and bolt connection withsaid section, and a square sleeve adapted to be slipped over said blockswhen the latter registerand to abut against the stop.

In testimony whereof I aliix my signature in presence of two witnesses.

WALLACE L. GUMM. Witnesses:

SIDNEY M. PARKER, FRANK G. RAIBLE.

